Study of Basic Scilab Commands

AIM:
Practicing SCI LAB environment with simple exercises to familiarize with Command Window, History, Workspace, Current Directory, Figure Window, Edit Window, Shortcuts, and Help files.

SOURCE CODE:
Working on general commands in the Scilab environment:

// Basic Commands

help        // Detailed help menu for Scilab commands  

who         // Lists all the variables from the variable browser window  

whos        // Lists all the variables with byte size, variable type, etc.  

clc         // Clears the command window  

clear       // Removes the variable from memory  

quit        // Closes the session  

pwd         // Shows the present working directory  

ls          // Lists the files in the current directory  

cd          // Changes the directory  

mkdir       // Creates a new directory

Special Variables / Pre-Defined Variables:

%pi         // Value of Pi (≈ 3.14)  

ans         // Stores the most recent result  

%e          // Euler’s number (≈ 2.718)  

%eps        // Machine precision (epsilon)  

%inf        // Infinity  

Basic Scalar & Vector Operations:

// Scalar Element

y = [1 4 6]             // Declares a row vector  

yT = [1; 4; 6]          // Declares a column vector

// Matrix (Vector Elements)

Y = [1 4 6; 2 7 3; 4 1 1]  // Creates a 3x3 matrix  

// Determine the size / order of the vector or matrix

size(y)

// Changing specific elements in a vector or matrix

Y(2,3) = 10             // Changes the element at 2nd row, 3rd column to 10  

// Element-by-element operations using dot operator

linspace(0, 1, 5)       // Generates a vector: 0  0.25  0.5  0.75  1  

RESULT:
The study of basic Scilab commands was successfully practiced and executed.